Window.



N0 MODEL.

WITNESS E5:

Wt U 7.1 2

PATENTED DEC. 6, 1904. Li A. BBENNENSTUHL & M. SULKIN.

' WINDOW.

APYLIOATION FILED NOV. 2, 1903.

3 SHEETS-BEBE! Z.

\ f I C 6 (3 V 62 E TUF EE Z No. 776,721. PATENTBD DEC. 6, 1904. L. ABRENNENSTUHL 81: M. SULKIN.

WIND-0W.

APPLICATION FILED NOV. 2, 1903.

- NOMODEL.

I ww- UNITED STATES Patented December 6, 1904.

PATENT OFFICE.

WINDOW.

SPECIFICATION forming part of Letters Patent No. 776,721, dated D m i'6, 1904.

Application filed November 2, 1908. Serial No. 179,532. (No model.)

To all whom it may concern.-

Be it known that we, LAWRENCE A. BREN- NnNs'rUHL and MIOHA EL SULKIN,citizens of the United States, both of Boston, in the county of Suffolkand State of Massachusetts, have invented a new and useful Improvementin WVindows, of which the following is a full, clear, and exactdescription, reference being had to the accompanying drawings, forming apart of this specification, in explaining its nature.

Our invention relates to an improvement in windows havingvertically-moving upper and lower sashes; and it consists in providingthe respective sashes in said windows with a permanent set of screenswhich will close the space left by the opening, preferably of the uppersash and also the space then left between the sashes. In providing therespective sashes in the windows with a set of screens of this characterwe are endeavoring to supply a need which is especially felt inhospitals and other institutions where it is desirable to open thewindows in order to provide proper ventilation and at the same timenecessary to eliminate draft, dust, and other in jurious influencesfollowing the direct flow of the outside air. Our invention is also mostuseful in theaters, churches, and other places of public gathering whereoftentimes the windows are thrown open much to the injury of thoseseated near them, also for the ventilation of sleeping-chambers, mostespecially in winter, when owing to the extreme draft occasioned by thecold air outside and the warm air within the chamber one does not dareto open a window sufficiently to obtain proper ventilation of theapartment, and in summer it is effective, closing as it does when thewindow is open every point of possible entry of insects which mightotherwise find their way into the apartment, much to the inconvenienceof the occupant.

Our invention also pertains to other incidental attachments to thewindow which assist in the operation and manipulation of the sashes, allof which can best be seen by reference to the drawings, Wherein Figure 1shows the window fitted with our improved attachments in frontelevation. Fig.

2 shows the window and sashes in vertical section- Fig. shows the windowin horizontal cross-section. Fig. 4 shows in elevation a detail ofconstruction, to which reference will hereinafter be made. Fig. 5 showsin vertical section a detail of construction, to which reference willhereinafter be made. Fig. 6 shows in horizontal section a detail ofconstruction, to which reference will hereinafter be made.

In the drawings a window is shown comprising the casing A and the upperand, lower sashes A and A, respectively. Coming on the outside of thewindow and fitting on the under side beneath the head of the casing is aroller-screen B. The screen is made of any suitable material, dependingupon its particular use. When used as a draft-extinguisher andventilating-screen, it is made of cloth or such material as will cut offall draft, yet permitting of a free percolation of air through it. Inspecial cases the screen may be used for purposes of ventilation, yetmade to exclude dust or other objectionable matter. It may be made onlyinsectproof, this especially in summer, when the exclusion of insectsand not draft is the major consideration. The screen is hung by beingcontained in a guard b, which is fastened to the head of the casing ofthe frame, as to a board a. The guard .7) extends downwardly around andis made to entirely envelop and protect the screen, when rolled up, fromthe weather. The bottom edge of the screen fastened onto the outsidefacing of the outer rail of the upper sash, so as to become enrolled as.the sash is opened, so closing the space left by its opening. Asatisfactory way of securing the edge of the screen to the sash-rail,permitting of its being easily detached and also securing it in such away that the screen may unroll straight and evenly, is to have the edgeof the screen so made as to receive a rod 7/, run through it, which rodruns also through arbors o fastened to a strip o secured to'thesash-rail. (See Fig. 4.) It is to be noticed that the edge of the screenis cut out somewhat to permit of the entry of these arbors. This mode ofconnection is especially good not only for the reasons above mentioned,

but also because the screen is secured to lie out slightly from the edgeof the sash-rail, so that the respective side edges of the screen willcome in proper alinement to fit into the grooves 6, formed in the piecesor strips 5 fixed along the sides of the casing just outside andalongside the respective runways formed therein. (See Fig. 6.) It isnecessary, of course, when the window is opened to hold the screen sothat it will not sag, as it might otherwise do if there were anexcessive draft, so to prevent this sagging the edges of the screen arefitted to be contained and to run in these grooves, which tends to holdthe screen in place. In order to make more secure this method ofretention, the side edges of the screen are preferably bound with somekind of tape Z). A copper tape, permitting of the free rolling of thescreen, is found to be very good for this purpose. In order to make thescreen still more rigid and secure, it is also preferably reinforced bycross-bars of copper, 5 or some other reinforcing material suitablyspaced and extending laterally from side to side, so as not to interferewith the free rolling of the screen. (See Fig. 1.) In connection withthe upper sash there is also to be noticed the flap B, which is fastenedto the inside of the casing band extends with inclined bearings againstthe screen at the point 5 This flap closes the space which wouldotherwise be left open between the screen and the casing for the freeentry of air up through this space, especially when the window was open,and which space would gradually grow larger as the screen becameunwound. The flap B, however, being preferably made of some resilientsubstance,draws with permanent bearing against the edge of the screenwhatsoever its position of unwinding may be, so completely closing thespace under all circumstances. Then by extending as it does to beartangentially upon the screen it does not interfere with its properrolling or unrolling. The space left between the sashes when the uppersash is open, or the lower sash,for that matter,is closed by a screen 0,fastened upona frame 0, which is hinged to the top surface of theupperrail to thelower sash. (See Fig. 3.) The frame 0, bearing the screen, isso made that the screen will completely fill this space soleft,provision of course being made for the mullion with which the uppersash is usually provided. The frame also makes a spring connection 0with the said top rail of the sash, so that the frame is normally heldpressed down, when the screen will close this space between the sashes.The

screen itself is preferably made of the same material as the screen B,which, as said before, is so made or of such material as de pends uponits particular kind of usage. In asmuch as the screen 0 is turned up orraised when the upper sash is lowered, it serves as a convenient meansof unlocking the sashes consequent upon such movement. The frame of thescreen is accordingly fitted at either end with a bar 0 which contactsagainst the turned ends 0 of the respective spring-bolts 0*, fitted tothe top of the said upper rail of the lower sash at either side and inline with the side rails to the upper sash, so that the nose or ends 0of the respective bolts will fit into slots or sockets 0, cut in thefront facing of the said respective side rails and throughwearing-plates 0 with which said rails are provided, wherefore thesashes may be locked together, and, further, the relation of theframe-bars c and the turned ends 0 of the bolts is such that these boltswill be retracted from their respective slots or sockets in the siderails of the upper sash when the screen C is raised, so unlocking thesashes, when the upper sash may be run down. (See Figs. 2 and 3.) It isto be noticed in this connection that the plates 0 receive the wear ofthe bolts which might otherwise come directly upon the front facingofthe side rails to the sash. They are cut with the slots or sockets cat such. points as determine the respective locked positions of thesashes, one set of slots, of course, being so placed that the sashesbecome locked together when closed and other sets of slots being soplaced as to receve the bolts at various points of the upper sashsopening, when said upper sash may be locked at corresponding points ofadjusted position. As said before, the bolts are released by raising thescreen 0, whereupon the upper sash may be lowered to any point ofadjusted position; but when the upper sash is opened to any point ofadjusted position the respective bolts are released simply by raisingthe upper sash, for it is to be noted that the noses or ends of thesebolts are provided with oblique edges 0, against which will draw whenthe sash is raised the lower edges of the respective slots or sockets a,into which the noses or ends of the bolts extend, wherefore the boltswill be automatically thrown back. As the upper sash is raised thespring-bolts 6* will then bear to rub against the wearing-plates uponthe side rails until the sash becomes completely closed, when they willslip into the slots or sockets 0, which cor respond with the closedposition of the respective sashes. Another special feature of theconstruction is also to be noted. Inasmuch as the noses or ends of therespective bolts are destined to wear considerably against thewearing-strips of the side rails of the upper sash, each is accordinglyprovided with a roller-bearing 0, fitting therein. Such rollerbearingcontacts with the wearing-plates and not only tends to take up the wearwhich would otherwise come upon the parts, but also insures the freerunning of the bolts.

By reason of the fact that the various attachments are especiallyadapted to be used on windows in hospitals, churches, theaters, or largebuildings where the windows are high and not easily accessible we employmeans for raising the screen (1, and so for unlocking and releasing thesashes by a cord D, secured to the screen at (Z, and thence running overa pulley (Z, fixed by a suitable connection (Z to the upper rail of thelower sash. The pulley is so disposed that simply by drawing upon thiscord the screen C is raised, when the sashes become unlocked and theupper sash may be run down as desired. Upon the release of the cord Dthe screen 0 will assume its normal closed position, as beforementioned, and the bolts then released will be in readiness to slideinto any of the slots or sockets c correspending with the position whichthe upper sash is lowered to assume when the upper sash will be held atsuch point.

It is, perhaps, unnecessary to further refer to the operation of thevarious attachments. It is suflicient to say that, assuming the sashesto be both closed, they may be unlocked by raising the screen C directlyor by drawing upon the cord D. Upon the unlocking of the sashes theupper sash may be run down, drawingwith it the screen B, which, with theauxiliary flap B, closes the space left by the opening of the sash. Whenthe upper sash has been lowered to the desired point, the screen 0 isthen let go to resume its normal closed position, filling the spacebetween the sashes. When it is desired to close the sash, it may be runup in the usual manner.

Having thus fully described our invention, we claim and desire to secureby Letters Patent of the United States 1. In a window havingvertieally-moving sashes, the combination therewith of a rollerscreensupported to hang upon the outside beneath the head-casing of saidwindow and secured along one edge to the upper of said sashes to beunrolled thereby as said sash is lowered for closing the space left byits opening, and for closing the space between the sashes when opened, ascreen, a spring for holding said screen in a normally closed position,a bolt secured to said. upper rail of the lower sash and engaging withsaid upper sash, whereby the respective sashes are locked together, andmeans connecting said screen with said bolt, whereby the same willbecome released when the screen is raised.

2. In a window having vertically -rnoving sashes, the combinationtherewith of a rollerscreen supported to hang upon the outside beneaththe head-casing of said window and se cured along one edge to the upperof said sashes to be unrolled thereby as said sash is lowered forclosing the space left by its opening, a guard for protecting andenveloping said roller-screen when rolled up, a flapperpiece. forkeeping closed the space between the screen and its guard, means forholding and retaining the side edges of said screen when the screen isunrolled, and for closing the space between the sashes when opened, ascreen, a spring for holding said screen in a normally closed position,a bolt secured to said upper rail of the lower sash and engaging withsaid upper sash, whereby the respective sashes are locked together, andmeans connecting said screen with said bolt, whereby the same willbecome released when the screen is raised.

3. In a window having vertically -moving upper and lower sashes, thecombination therewith of a screen adapted to close the space between therespective sashes, a spring for holding said screen in a normally closedposition, a bolt secured to said upper rail of the lower sash andengaging with said upper sash whereby the respective sashes are lockedtogether, and means connecting said screen with said bolt or boltswhereby the same will become released when the screen is raised.

4. In a window having verticallymoving up per and lower sashes, thecombination therewith of a screen, the frame of which is secured to thetop rail of the lower sash and which screen is adapted to close thespace between the respective sashes, a bolt secured to the rail of saidlower sash, which bolt makes locking engagement with the adjacent siderail of said upper sash, a wearing-plate fixed to said side rail forreceiving the contact of said bolt and having one or more slots cuttherein for receiving the bolt, and means combining said screen and boltwhereby the bolt may be withdrawn when the screen is lifted.

5. In a window having vertically-moving upper and lower sashes, thecombination therewith of a screen, the frame of which is pivoted to theupper rail of the lower sash, a bolt having a roller-bearing fixed inthe nose or end thereof, likewise secured to said upper rail andprojecting to engage at one ormore points with the adjacent side rail ofsaid upper sash, said bolt having a turned end, a bar projecting fromthe side of said screen to engage with the turned end of said boltwhereby said bolt may be withdrawn when the screen is raised, and meansfor raising said screen substantially as described.

LAWRENCE A. BRllNNENSYllUHl MICHAEL S'UIIKIN. In presence of- J. M.DoLAN, M. V. FoLnY.

